They begin as streams in mountains or hills
I think the common between low-latitude countries would be people's skin color and If you compare the Philippines and its neighboring countries, they have more or less similar physical attributes. Typical Filipinos looked similar with Indonesians.
For Southeast Asia, i would also consider religion is common between the two. Both the Philippines and the other Southeast Asian countries such as Indonesia, Malaysia, and Thailand, they have a large number of Muslim settlers while other tropical countries in South America, these countries have similar Spanish ancestry just like the Philippines.
<span>The Middle East is notorious for having fewer opportunities for WOMEN. Up to this day it is still generally true that women is still regarded unequal to men in the Middle East. The prevailing social, cultural and religious practices are a culprit to the suppressed rights of women in this region.</span>
Was it the size? I thought I heard it once but I'm not really sure.